-U- 
CEH.EAL AND EORAGE-CROP INSECTS 
WHEAT 
CHINCH BUG ( Blissus leucopterus Say) 
Indiana. C. Benton (Eebruary 21): To determine winter mortality in 
hilernation quarters,. 22 one-fifth-square-foot samples of Andropogon 
furcatus and A. scoparius were collected on' January from 2 localities 
in Tippecanoe County and 1 locality in Benton County. Mortality found 
to he 27 percent, based on nth e recovery of 3»255 live and 1,215 dead 
bugs. Weather in this area unusually cold, especially in Ja.nuary, with 
frequent temperatures below zero. The gro\md was snow-covered during 
much of this period. 
Illinois. W. P. Elint (Pebruary 23): A number of samples of hibernating 
bn^s brought in from favored situations, all being taken in the east- 
central part of the State. In nearly all cases the .bugs were protected 
by snow during the lowest temperatures, and survival is quite high, 
probably a little above normal. 
Missouri. L. Haseman (Ecbruary 23): Preliminary checlcups in central 
Missouri on hibernating chinch bugs indicate low winter mortality. 
Oklahoma. R. G. Dahrns (Pebruary 26): Recent surveys indicate that winter 
mortality in southwestern Okl.ahoma was loss than 5 percent, despite 
the fact that January was the second coldest month on record. 
« 
HESSIAN PLY ( phytophaga destructor Say) 
Illinois. D. W. LaHue (Pebruary 21): Material collected on Pebruary l6 
from a heavily infested field of fall-planted wheat near Chrisman 
showed 3^ percent of the plants to be infested with full-grown larvae 
and some peiparia. Many other plants showed characteristic injury, 
but only shriveled remains of larvae could be found. On December l4, 
1939 > this field showed 50 to 75 percent of the plants to be infested 
with larvae of all sizes, mostly half-grown or over; no puparia were 
found. Examination of material from another heavily infested field 
of volunteer wheat nearby showed all larvae in pupo.ria on December l4. 
Puparia examination made from ma.torial collected on Pebruary I6 
showed out of 125 puparia, I06 containing live larvae, 10 dead larvae, 
4 dead pupae, and 5 empty puparia, showing some fly emergence late 
last fcall. 
CORN 
CORN EAR WORM ( Heliothis armigera Hbn. ) 
Mississippi. C. Lyle (Pebruary 23): Larvae found feeding on chrysanthemum 
flowers at State College late in October 1939* Similar damage reported 
from Jackson County, but no larvae found. 
